Tile-tamping machine



' 9. A. CARPENTER TILE TAMPING MACHINE.

No. 459,399. Patented Sept. .15, 1891.

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UNITED STATES PATENT OFFICE.

CHARLIE A. CARPENTER, OF BALDIVINSVILLE, NEIV YORK.

T! LE-TAM PING MACH l N E.

SPECIFICATION forming part of Letters Patent No. 459,390, datedSeptember 15, 1891.

Application filed February 7,1891. Serial No. 380,609. (No model.)

To all whom, it may concern;

Be it known that I, CHARLIE A. CARPEN- TER, of Baldwinsville, in thecounty of Onondaga, in the State of New York, have invented new anduseful Improvements in Tamping- Machines, of which the following, takenin connection with the accompanying drawings, is a full, clear, andexact description.

My invention relates to machines and apparatus for tamping concretesewer-pipe while in the process of construction in the mold around thecentral core, which forms the bore of the pipe.

My object is to produce a more perfect, harder, and morethoroughly-compacted pipe, capable of standing greater strains and ofgreater durability all through, the thorough tamping of the materials asthey are fed into the mold around the core by means of power applied tothe tamping-bars causing them to travel around the mold as the materialis fed into it and automatically rising as'the pipe is built up.

My invention consists in the several novel features of construction andoperation hereinafter described, and which are specifically set forth inthe claims hereunto annexed. It is constructed as follows, referencebeing had to the accompanying drawings, in which- Figure 1 is anelevation of the machine setup with part of the mold broken away to showthe core and with part of the core broken away to show the means forconnecting the tamping-bar shaft to the core and permitting the shaft torotate thereon and steadying the core. Fig. 2 is a detail of thefriction-grip device for holding the tamping-bar. Fig. 3 is a detailshowing the eccentric for driving the tamping-bars and the means foractuating it. Fig. 4 is a plan of a tamping-bar head.

A is the main frame erected upon the floor 1 and comprising verticaltimbers 2, horizontal plate-timbers 3, cross-timbers thereon, andsuitable braces. Upon the top I mount the drive-shaft 4:, having adrive-pulley 5, an or dinary sliding chuck 6, a spur-gear or pulley 11,and a bevel-gear 8, and 9 is an ordinary lever mechanism for-throwingthe chuck into and out of engagement. A shaft 10 is mounted parallelwith the main shaft and provided with a pinion or pulley 7, and 12 is aneccentric secured to and rotating with the shaft 4..

A bevel-gear 13, -meshing with the gear 8, is secured upon the verticalshaft 14, and 15 is a sleeve mounted thereon by a spline or feather wayjoint and movable vertically thereon and rotates with the shaft, and 16is a head secured upon its lower end and recessed in its lower face. Aring l7is loosely mounted in a groove around the sleeve and is providedwith ears, to which the connection bars 18 are connected, and these barsare joined and then curved, so as to form the ring 19 around theeccentric, so that the rotation of the eccentric will raise and lowerthe sleeve upon the shaft. The arms 20 are composed of two bars curvedcentrally to fit into a groove around the sleeve and curved at 7 theirends, as shown, and provided with an elastic frictional packing 21 inthe end jaws, and 22 are set-screws by which the tensionis regulated, sothat they rotate with the sleeve. Below these arms I secure another pairof like arms 23, either with or without frictional packing and of thesame length as the others,

and secured in a third groove, so that they rotate with the sleeve andoperate as guides for the shanks 24: of the paddles, while the arms 20grip them and carry them vertically.

B is the mold, of any ordinary construction, and 25 is the tubular coreset within the mold, as usual. A spider 26, secured within the core,supportsthe block 27, which is bored out to receive the plunger 29 andspring 28, which plunger fits into the recess in the bottom of the head16 loosely. When this plunger is depressed, the mold and core can beremoved from under the shaft. When an empty mold with its core is placedunder the shaft, the plunger is depressed and springs up into the headand forms a sort of pivot for the rotation of the shaft and sleeve, andalso steadies the core, while the eccentric raises and lowers therotating sleeve, the arms, and the tamping-bars, whose heads impactagainst and compact the material in the mold, and as this material isbuilt up the bars are automatically shortened by, slipping in theirfrictiongrips until the mold is filled. I then remove the mold and put anew one in place, lowering the tamping-bars by loosening the grips. Thesleeve and arms carry the camping-bars around and around in the mold, sothat all parts are packed alike and homogeneous as the material is fedinto the mold. I stop the machine by throwing the clutch out ofengag'ement.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A tamping-machine comprising a vertical shaft, a sleeve splinedthereon, arms secured to the sleeve, tamping-bars mountedin said arms,an eccentric and a divided connecting-rod connecting it to the sleeve,and means to rotate the eccentric and the vertical shaft,'incombination, as set forth.

2. The combination, with the vertical driveshaft recessed in its lowerend, of a spring- CHARLIE A. CARPENTER.

In presence of- I-I. P. DENISON, O. W. SMITH.

